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copy_file_range: New function to copy file data

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The semantics are based on the Linux system call, but a very close
emulation in user space is provided.
This commit is contained in:
Florian Weimer
2017-12-22 10:55:40 +01:00
parent 6cb86fd21c
commit bad7a0c81f
44 changed files with 1340 additions and 3 deletions
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4
sysdeps/unix/sysv/linux/kernel-features.h
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@ -111,3 +111,7 @@
#if __LINUX_KERNEL_VERSION >= 0x040400
# define __ASSUME_MLOCK2 1
#endif
#if __LINUX_KERNEL_VERSION >= 0x040500
# define __ASSUME_COPY_FILE_RANGE 1
#endif